Results 61 to 70 of about 2,470,671 (145)

The quantum marginal problem for symmetric states: applications to variational optimization, nonlocality and self-testing

open access: yesNew Journal of Physics, 2021
In this paper, we present a method to solve the quantum marginal problem for symmetric d -level systems. The method is built upon an efficient semi-definite program that uses the compatibility conditions of an m -body reduced density with a global n ...
Albert Aloy, Matteo Fadel, Jordi Tura
doaj   +1 more source

Few-Body Systems Composed of Heavy Quarks

open access: yes, 2012
Within the past ten years many new hadrons states were observed experimentally, some of which do not fit into the conventional quark model. I will talk about the few-body systems composed of heavy quarks, including the charmonium-like states and some ...
Jun He   +12 more
core   +1 more source

Virial expansion coefficients in the unitary Fermi gas

open access: yesSciPost Physics Proceedings, 2020
Virial expansion is widely used in cold atoms to analyze high temperature strongly correlated many-body systems. As the n-th order virial expansion coefficient can be accurately obtained by exactly solving up to n-body problems, the virial expansion ...
Shimpei Endo
doaj   +1 more source

Window for Efimov physics for few-body systems with finite-range interactions

open access: yes, 2017
We investigate the two lowest-lying weakly bound states of $N \leq 8$ bosons as functions of the strength of two-body Gaussian interactions. We observe the limit for validity of Efimov physics. We calculate energies and second radial moments as functions
Fedorov, D. V.   +2 more
core   +1 more source

Photo and Electrodisintegration of Few-Body Systems Revisited [PDF]

open access: yes, 2003
Twenty years after P. Sauer released the state of the art Faddeev solution of the bound state three nucleon systems, I revisit photo and electrodisengration of few body systems with a special emphasis on the prospects opened at Jefferson Laboratory.
openaire   +2 more sources

Universality and Halo Nuclei

open access: yesEPJ Web of Conferences, 2010
Universal aspects of few-body systems will be reviewed motivated by recent interest in atomic and nuclear physics. The critical conditions for the existence of excited states in three-body systems with two-identical particles will be explored.
Tomio L.
doaj   +1 more source

Structure of exotic three-body systems

open access: yes, 2005
The classification of large halos formed by two identical particles and a core is systematically addressed according to interparticle distances. The root-mean-square distances between the constituents are described by universal scaling functions obtained
A. Delfino   +14 more
core   +1 more source

Scars of Invariant Manifolds in Interacting Chaotic Few-Body Systems

open access: yes, 1998
We present a novel extension of the concept of scars for the wave functions of classically chaotic few-body systems of identical particles with rotation and permutation symmetry.
B. Eckhardt   +19 more
core   +1 more source

Mathematical Modeling of Ultracold Few-Body Processes in Atomic Traps

open access: yesEPJ Web of Conferences, 2016
We discuss computational aspects of the developed mathematical models for ultracold few-body processes in atomic traps. The key element of the elaborated computational schemes is a nondirect product discrete variable representation (npDVR) we have ...
Melezhik V.S.
doaj   +1 more source

Extrapolation and emulation techniques for few-body resonances [PDF]

open access: yesEPJ Web of Conferences
Quantum resonances, i.e., metastable states that decay over time, are a fascinating phenomenon relevant in different areas of physics. In nuclear physics, they not only appear as excited states of various atomic nuclei, but they can also constitute the ...
König S.
doaj   +1 more source

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